Lensrentals Shows Step-by-Step Process in Assembling a Custom-Made 4.9mm f/3.5 Ultra Fisheye Lens

Lensrentals is a great resource for gear rentals but somewhat in the background of their main business, they also have a blog run by their founder, Roger Cicala. His ins-and-outs of the technical aspects of gear they rent is often detailed and entertaining for gearheads.

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